A DEGENERATE EDGE BIFURCATION IN THE 1D LINEARIZED NONLINEAR SCHRODINGER EQUATION

作者：Coles Matt^*; Gustafson Stephen^*

来源：Discrete and Continuous Dynamical Systems, 2016, 36(6): 2991-3009.

DOI：10.3934/dcds.2016.36.2991

• Nonlinear Schrodinger equation
• linearized operator
• edge bifurcation
• Birman-Schwinger formulation
• resolvent expansion
• Lyapunov-Schmidt reduction

This work deals with the focusing Nonlinear Schrodinger Equation in one dimension with pure-power nonlinearity near cubic. We consider the spectrum of the linearized operator about the soliton solution. When the nonlinearity is exactly cubic, the linearized operator has resonances at the edges of the essential spectrum. We establish the degenerate bifurcation of these resonances to eigenvalues as the nonlinearity deviates from cubic. The leading order expression for these eigenvalues is consistent with previous numerical computations.

• 出版日期2016-6